Steam-boiler



(No Model.) G.F.GABLAND.

STEAM BOILBR.

No. 447,308. Patented Mar. 3, 1891.

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CHARLES F. GARLAND, OF CHELSEA, ASSIGNOR OF ONE-HALF TO JOHN J.

QUIGLEY, OF EAS'I` BOSTON, MASSACHUSETTS.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent N o. 447,308, dated March3,'1891. Application filed December 26, 1889. Serial No. 334,966. (Nomodel.)

To all whom it may concern..-

Be it known that I, CHARLES F. GARLAND, of Chelsea, in the county ofSuffolk and State of Massachusetts, have invented certain new and usefulImprovements in Steam-Boiler Cleaners, of which the following is aspecification.

My invention has for its object the provision of such improvements insteam-boilers as that in blowing offthe oil and sediment that may havesettled upon the crown-sheet may be drawn off and discharged through theblow-off pipe.

My invention also has for its object the provision of improved means forlling boilers, whereby the action of the inflowing water may operate toclean the crown-sheet.

My invention also has for its object the provision of improved means forwashing the crown-sheet after the boiler has been blown oft'.

' My invention also has for its object the provision of improved meansfor aiding the circulation of water in the boiler.

This invention will first be fully described in connection with theaccompanying drawings, forming a part of this specification, and thenparticularly pointed out in the claims.

Of the drawings, Figure 1 is a side elevation (parts being representedas broken out and parts being shown in section) of an upright boilerprovided with my improvements. Fig. 2 is a vertical sectional view of aportion of a horizontal boiler, showing a Way in which my improvementsmay be applied thereto.

The same letters of reference designate the same parts or features, asthe case may be, in both of the views.

In the drawings, having reference to Fig. l,

a designates the fire-box, b the4 crown-sheet, c the lues, and d thewater-leg, of a steamgenerating boiler.

e is a vertically-arranged blow-off pipe eX- tending from near the uppersurface of the crown-sheet b, and from a cent-ral point with respect tothe same, through the boiler, (in the present instance through the top,though it might be through the side,) where it communicates by means ofa branch f with a supply and discharge pipe g, the latter extending downto a pointwhere it communicates with the blow-off pipe 7n, connectedwith the water-leg CZ. o.' is a surface blow-off pipe connected with theboiler and communicating with the j is a valve 1n pipegabove the pointwhere the branch f connects with the same. 7o is a valve in the saidpipe below the said point7 and Z m are valves in the blow-off pipe h onopposite sides of the point at which the pipe g communicates therewith.

In the use of my invention as it is illustrated in Fig. 1, should it bedesired to blow off the boiler, all of the valves exceptingvalve mareclosed, when the valve in surface blow-off piper.' is opened, so as toblow off the floating matter on the water, as usual. The valve inpipee'inay then be closed and valve kopened, which will result in theblowing off ofthe water through blow-off pipe e, drawing it from the topof the crown-sheet b and carrying with it any foreign matter or sedimentof any kind that may have settled upon the crownsheet. When the waterhas been blown off down to the crown-sheet b, valve 7c may be closed andvalveZ opened and the balance of the water blown 01T from the water-legd. Valve j may'now be opened and water fed to the boiler through thepipes f and e, so as to thoroughly wash the yupper surface of crownsheett, such wash-water being allowed to run off through pipe 7L.

In filling the boiler, valves 7c, Z, and m may be closed andgvalve 7'opened and the water supplied' through pipes fand e, so that the actionof the iniiowing water may be einployed as far as possible to wash andclean the uppersnrface of the crown-sheet, the particles of greaterspecific gravity than water being washed into the water-leg d, wherethey can be readily blown off through blow-off pipe h. After the boilerhas been filled and the same is being used in the generation of steam,valves j m may be closed and valves 7o Z opened, and circulation ofwater in the boiler assisted by the How of the same from the boilerthrough the pipes e f h g, and to start such circulation after the, saidpi es become iilled the valve in'surface blow-o pipez' may be opened fora short time.

If desired, the blow-off pipe e may be pro- Ioo vided with branehesn,ext-ending to different points on the crown-sheet l), as shown in Fig.2, so that the surface of the crown sheet may be operated upon asthoroughly as possible.

It is obvious that other changes may be made in the form and arrangementof parts comprising the invention without departing from the nature orspirit thereof.

Having explained the nature of my invention and described a way ofconstructing and using the same, I declare that what I claim 1s- 1. Thecombination, with a boiler provided with a crown-sheet, of thevertically-arran ged blow-off and supply pipe e, extending from theexterior to and terminating with an open end or month near or over theupper surface of said crown-sheet, a supply and discharge pipe g, towhich said pipe e is connected, and the valves j and 7u, located,respectively, above and below the connection between said pipes c and g,substantially as and for the purpose set forth.

2. A boiler provided with a vertically-arranged blow-oft` and supplypipe e, extending from the exterior to and terminating with an open endnear the upper surface of the crownsheet7 an independent surfaceblow-oft, and an independent water-leg blow-off, as set; forth.

3. The combination, with aboiler provided with a crown-sheet and anindependent water-leg, of the vertically-arranged blow-oft' and supplypipe c, extending from the exterior to and terminating near the uppersurface of said crown-sheet, a vertically-disposed supply and dischargepipe g, the branch pipe f, connecting said pipe e with said pipe g, andthe blow-off pipe h, connecting said water-leg with said pipe g,together with the series of Valves arranged in said pipes g and h,substantially as set forth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing Witnesses, this 21st day oi' December, A. D.1889.

CHARLES F. GARLAND. XVitneSSes:

ARTHUR W. CnossLEY, A. D. HARRISON.

